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(No Model.) 2 Sheets-Sheet 1'.

N. W. WBSTOOTT. CIRCULAR KNITTING MACHINE.

N o.502, 688. Patented Aug. 1,-1893.

Wfissa. l I Y Invanfi (No Model.) 2 Sheets-Sheet 2A N. W. WESTGOTT.

CIRCULAR KNITTING MACHINE. No. 502,688. Patented Aug. 1, 1893.

UNITED STATES -P 'rsNr @FFICE.

NATHANIEL 'w. WESTCOTT, or PROVIDENCE, RHO E ISLAND, ASSIGNOR To HIMSELF AND JAMES M; corn, OF SAME PLACE.

cmcu LAR-IKNITTING'YMA'C Hm SPECIFICATION forming part of Letters Patent No. 502,688, dated August 1, 1893.

Application filed September 12,1392. semi No. 445,698. (No model.)

To all whom it may concern:-

Be it known that I, NATHANIEL W. WEST- COTT, a citizen of the United States, residing the improved construction of parts, as hereine.

after fully set forth.

Figure 1, represents a top view of a knitting machine provided with my improvement.

Fig. 2, represents a side elevation of the same.

Fig. 3, represents a side view of thecam employed to depress the stitches and the stitch clearing bars. Fig. 4, represents a top view of the machine, with the stitch clearing bars removed to'show the operating cam. Fig. 5, is a vertical section taken in the line 5, 5, of Fig. 4, with the stitch clearing bars in posi-' tion. Figs. 6 and 7 are edge views of the cam" bar operating the clearing-bars taken at right angles to each other. Fig. 8, represents a detail section taken inth'e line 8, 8, of Fig-4.,- showing an adjustable portion of the cam for operating the clearing bars. Fig. 9, shows a top view of the lever for adjusting the cam. Fig. 10, represents a top view of some of the stitch clearing bars, and of the disk upon which they are held. Fig. 11, represents a side view of one of the bars. Fig. 12, represents a side view of a cam for depressing'the clearing bars;

In the accompanying drawings, A repre-' sents the bed frame of the machine, B the.

driving shaft, 0 the driving pinion and D the revolving head, the said head being provided with the gear E, which engages with the driving pinion O. The revolving head D is supported by the fixed ring F, which enters the circumferential groove G in the head D, the said ring F being supported from the bed A by means of the posts H.

Upon the upright rod 1, attached to the bed piece A, is placed the cam J, which serves to raise the stitch clearing bars M, the said cam being firmly held upon the rod by means of the set screw K, and upon the rod-I above the ;cam,J, is placed the loose diskLprovided with the annular flange a, which serves to support the inner endsb of the'stitch clearing bars M, the outer ends b"of which pass between the adjoining needles 0; c. The needles .0 are made in hook form, and areiirmly connected tosthe revolving headD, by means of the clamping segmehts-NQandthe undercut flange The camd is made with a gradual rise e, a succeeding'fallf, and gradual rise g, and theclearing bars M, and the stitches of the fabric are held below the barbs of the needles c, by means of the cam O, which is adjus.tably supported by a standard P and in "order to raise the outeriends'h of'the stitch clearing bars'M; to th'e proper height for shedding the stitches, thenose piece Q of the cam J is made adjustable, the samebeing'held in a dove-tailedgroove i, and provided with an inclined under surface j, so that the movement of the lever B in the proper direction, will cause the required upor down movement ofthe nose piece, the arm-k of the said lever [shownin Fig. 8, being falfiat spring which serves tosupport the said nose piece so that it may beallowed to yield in case of a knob or other obstruction, and the cam S which is attached to the rod .1 above'the disk L, serves to again bring the clearing bars totheir proper position for continuing around the machine and for re-engagement with. the cam O. The

thread runs through the guidel and is pressed down below the barbs of the needles by the feed wheel T, and at the riseof the thread, the barbs of the needles-are-pressed back by the press wheel U, so that. the'previously formed stitch may beshed-over the barb. When the clearing bars are at the point m of the cam J the stitches will be just above the barbs of the needles, and I provide the recess n beyond the point on of the cam J, so that when thestitches become disarranged when mending the thread, they may be pushed below the barbs of the needles as required, by

' hand, which is a great convenience in operating the machine.

I claim as my invention I w 1. In a knitting machine, the combination with the circular series of needles, and the in-' tervening series of clearing bars, of the liftthe presser Wheel, and the downward recess in the cam beyond the presser wheel, substantially as described.

4. In a knitting machine, the combination with the circular series of needles of the intervening series of clearing bars, the cam for raising the outer ends of the clearing bars, 20

and the loose ring for supporting the inner ends of the same, substantially as described.

NATHANIEL W. VVESTOOTT. Witnesses:

SOCRATES SCHOLFIELD, JOHN L. LYNCH. 

